JPH06504124A - Telemetry device for temperature and/or temperature difference - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Telemetry device for temperature and/or temperature difference The present invention relates to a temperature and/or temperature difference measuring device.

To make such measurements, heat flux sensors are used to measure the surface of certain body parts. It captures infrared radiation emitted from an area and uses it to determine the temperature and/or temperature of that area. It is known to estimate degree differences.

However, previously known devices do not work well when measuring very small temperature differences. Also, it is not easy to use.

The object of the present invention is particularly to improve such prior drawbacks and to improve the surface area of the body. A measuring circuit including a sensor that detects the heat flux emitted from the area a temperature and/or temperature difference telemetry device comprising a housing carrying a constant circuit; It is to provide.

According to the invention, this temperature and/or temperature difference telemetry device A measuring circuit including a sensor of heat flux emitted from an area and its sensor. A hand-held housing carrying the sensor and equipment for locating the area to be explored. be equipped with a

According to the present invention, the measurement circuit includes a memory circuit connected to the thermal sensor, The signal coming from the sensor, in this case the reference signal, is stored in the memory circuit at any time. Memory introduction equipment such as a push button to store data in the memory, one input part is a heat the storage circuit, the other input part of which receives the output signal of the sensor and which sends out the reference signal; a connected comparator, the output of which is connected to the reference signal and the output from the thermal sensor; a comparator that sends out a signal corresponding to the difference between the signals; and an output section of the comparator; and comprises a signal equipment for transmitting a signal corresponding to said difference.

According to the present invention, the positioning device preferably moves the housing relative to the body surface. It is equipped with a device for setting in a certain predetermined position, and this device is further adjustable. I can do something.

In one preferred variant embodiment, the positioning device comprises at least two light emitters. light emitters and the housing is in place. The light beams are adapted to create light spots on the body surface that fall within predetermined positions of each other. .

According to the invention, the light emitter is arranged at the volume aimed or probed by the thermal sensor. installed on both sides of the volume, and emits a light beam tilted to the axis of the volume. do.

According to the invention, said light emitter is advantageously adjustable and capable of probing or aiming. Rotate to change the angle of the emitter axis relative to the axis of the volume are connected like this.

According to the invention, at least one of said spots is probed by a thermal sensor. The surface of the body is made to conform to the surface of the body.

The device of the invention is further characterized in that said searching or aiming volume is a cylinder. Equipped with

In one preferred embodiment, the housing includes an aperture, and a reflective light source behind the aperture. The equipment is installed and a heat sensor is placed in front of this reflective equipment. Reflective equipment, exploration Or the aiming volume is made cylindrical.

The housing also includes a laterally extending hand grip, with a base of the grip having a The push button is installed.

Attachments showing non-limiting embodiments of the temperature and/or temperature difference telemetry device of the invention The invention will be better understood from the drawings.

FIG. 1 is an elevational sectional view of the temperature measuring device of the present invention, and FIG. 2 is a cross-sectional view of the temperature measuring device of the present invention. External view, Figure 3 is a left side view of the temperature measuring device in Figure 1, Figure 4 is the temperature measurement device in Figure 3. drawings of the device in other adjustment positions; FIG. 5 is a schematic diagram of the temperature measuring device.

As shown in FIGS. 1 to 4, the present invention, generally designated by the reference numeral l, The telemetry device includes a hand-held housing 2 made of plastic material, for example. The housing has a section 3 of cylindrical or square cross section, one of which An opening 4 is provided at the end of the opening 4, and a transverse wall 5 is provided at a distance from this opening. to define a front chamber 6.

On the side of the wall 5, the housing 2 furthermore has a chamber 7, which has two parallel chambers in one direction. a wall 8, a wall 9 in another direction and an inclined wall 10, and penetrating the inclined wall. The chamber 7 continues into the interior of the grip 11.

Walls 8 and 9 extend into section 3. The grip 11 is at an angle of approximately 45° to the axis of the portion 3. It slopes towards the side of the section and extends at right angles to the wall 10. Room 7 on the other side of wall 5 is closed by a wall 12 curved in the direction of wall 8.

A temperature measuring device 1 is carried in a housing 2 and is generally designated by the reference numeral I3. Equipped with a measurement circuit.

The measuring circuit 13 has a heat flux sensor 14 .

This thermal sensor is located in a chamber of the housing 2, spaced apart from a parabolic mirror 15 fixed to a wall 5. It is mounted in 6. The thermal sensor 14 is connected to the chamber 6 by means of radial legs (not shown), for example. is fixed on the axis of the Is the reflecting mirror 15 the surface of the sensor 14 facing this mirror? It passed through the opening 4 and entered the aiming cylinder 16 that passed around the sensor 14. It is said to be able to converge and receive heat flux.

The temperature measuring device 1 further includes a device generally designated 1 for positioning the housing 2. 7. Equipped with positioning equipment as instructed.

This positioning device 17 is a light emitting diode consisting of two electroluminescent diodes I8 and 19. Equipped with a mitta. These diodes are provided on both sides of the cylindrical part 9 of the housing 2. and by axes 22 and 23 perpendicular to the axis of the cylindrical part 3 of the housing 2. The housing 2 is supported on U-shaped supports 20 and 21 which are pivoted horizontally to the housing 2. These branches The gears 20 and 21 are rotatably connected to each other by gear sectors 24 and 25, and With the screw 26 passing through the arc-shaped elongated hole 27 provided in one arm of the support 21, It can be fixed so that it does not rotate.

In this way, the electroluminescent diodes 18 and 19 form parabolic mirrors with their respective optical axes at the same point. It emits light beams 28 and 29 that cross the axis of 15.

In the example described here, the measuring device l is properly set up with respect to the surface 30. In other words, the axial center of the parabolic mirror 15 corresponds to the axial center of the aiming cylinder 16. When set perpendicular to the axis of the cylindrical portion 3 or at a suitable distance from the surface 30, the light The two light spots on surface 30 of bundles 28 and 29 overlap each other in substantial agreement. , and these two overlapping spots are connected from the sensor 14 to the aiming cylinder 1. 6 to match and cover the area of surface 30 visible through 6.

The measuring device l is not at a suitable distance from the surface 30 or is tilted with respect to the surface 30 In some cases, the two light spots are not in the required position with respect to each other.

As shown in FIG. 3, a diameter reducing washer 31 is installed inside the opening 4 of the chamber 6. The diameter of the aiming cylinder 16 can thus be varied. Adjustment instead of diameter reducing washer. It may also be provided with an adjustable aperture.

In order to adapt the positioning device 17 to the new aiming volume, the corners of the support 21 must be By changing the intensity adjustment, the luminous flux 28 emitted by the electroluminescent diodes 18 and 19 It's okay to change the angle at which you make 29.

As shown in FIG. 5, the measurement circuit 13 receives the signal sent from the thermal sensor 14. a receiving amplifier 32, and one input is connected to the output of the amplifier 32; A comparator 33 is connected to an output section 34.

The measuring circuit 13 is furthermore connected to the human power section or the output of the amplifier 32, and the output A storage circuit 35 connected to the other input section of the comparator 33 is provided. This memory circuit 3 5 is used to store the output signal of the amplifier 32 for a certain period of time.

This memorization operation can be performed using, for example, a push button provided at the base of the grip 11 on the side of the housing 2. This is carried out using storage command introduction equipment consisting of 36 units.

In the example of FIG. 1, the signal equipment 34 is attached to the wall 12 of the housing 2. A series of light emitting diodes 37 and an acoustic alarm 3 installed in the Howsong chamber 7 Consisting of 8.

The amplifier 32, the comparator 33, the storage circuit 35, and the various elements attached thereto ( (not shown) is, for example, a printed circuit 39 installed in the chamber 7 of the housing 2. thus carried and powered by an electrical coat 40 passing through the end of the grip 11. be done.

When using the measuring device I described above, the following operations are performed.

First of all, the diameter of the aperture 4 is adjusted as necessary to achieve the specific alignment of the aiming cylinder 16. Fixed to diameter. Also, by adjusting the inclination angle of the electroluminescent diodes 18 and 19, the search table can be adjusted. Determine a specific measurement distance to plane 30.

Hold the handle of the measuring device in your hand.

The measuring device l is set at a suitable distance and a suitable angular position relative to the surface 30. This much In this example, the light beams of electroluminescent diodes 18 and 19 produce two light beams. This is achieved when the spots meet and overlap, forming a substantially circular shape.

By pressing the switch 36, the direction of the thermal sensor 14 from that area of the surface 30 is changed. The output signal of the amplifier 32 corresponding to the value of the heat flux emitted to the storage circuit 35 to be memorized.

The measuring device l is moved and a suitable measurement is made for other areas of the surface 30 in the same way as before. Set to position.

There, the comparator 33 detects the thermal flux emitted from the area of the above-mentioned function in the direction of the thermal sensor 14. The output signal of the amplifier 32 corresponding to Fuchs is the signal previously stored in the storage circuit 35. Compare with.

The result of this difference is communicated to the signal equipment 34 where the round speaker 38 generate a sound of a predetermined level and/or tone corresponding to the A predetermined number of diodes 37 emit light.

The operator can then determine whether the two areas being compared are at the same temperature or at different temperatures. It is possible to know what the temperature is and then recognize the difference.

Needless to say, the signal to be stored in the memory circuit 35 corresponds to a known specific temperature. This allows operators to not only detect temperature differences between multiple areas; The temperature of each area can be known, for example, by means of light emitting diodes 37.

The operator can change the reference signal stored in the memory circuit 35 at any time. . For this purpose, it is only necessary to operate the pushbutton 36.

Aiming or searching volume 16 or cylindrical, and optical positioning equipment 17, the measuring bag rILl can measure the diameter of its aiming cylinder 16. It can be between 0.015m and 0.04m, then between 0.10m and 1m. measure very small temperature differences of at least 1/10 degrees at distances between Something comes up.

The measuring device described here preferably measures various areas of the surface of the human or animal body. can be used to measure temperature differences and perform medical diagnosis. The structure of the device allows you to hold it in your hand and operate it. It is very convenient to create and has a reference area that can be changed arbitrarily to improve medical The temperature difference can be measured by comparing it with the temperature of the required area. .

The invention is not limited to the examples shown here.

e.g. a light spot created by a light emitting diode positioned on the surface to be probed The diodes come in a variety of types, and the adjustment position of these diodes from the probe surface can also be set in a variety of ways. Can be determined. Other optical positioning devices may be used instead of light emitting diodes. stomach. For example, a light emitter can be installed just in front of a thermal sensor, and from this point the light beam is directed towards the surface being probed. The beam may also be emitted along the axis of the aiming cylinder. Heat flux measurement times The arrangement of the road inside the housing can be changed in various ways, and the signal equipment can also be installed outside the housing. The graphic display installed in the pond could be equipped with equipment. push button or all All command introduction equipment may be provided outside the housing.

international search report 1-1-wheel 1-toge---waPCT/F'R9110064B

Claims (10)

[Claims] 1. A sensor ( 14) including a measuring circuit (13) and its sensor and the location of the area to be explored; Temperature and and/or temperature difference telemetry device, in which the measuring circuit (13) is connected to the thermal sensor. A connected memory circuit (35), the signal coming from said thermal sensor, in this case serves as a reference signal. a push button (36) for storing the signal in the storage circuit at any time; , one input section receiving the output signal of the thermal sensor (14); and the other input section is connected to the storage circuit (35) that sends out the reference signal. a device (33), the output of which receives the reference signal and the signal from the thermal sensor; a comparator that sends out a signal corresponding to the difference between the , and a signal equipment (34) for transmitting a signal corresponding to the difference. Measuring device. 2. The positioning device (17) positions the housing at a certain predetermined position relative to the body surface. 2. The measuring device according to claim 1, further comprising equipment for setting the measuring device in position. 3. Claim 1 or 2, characterized in that the positioning device (17) is adjustable. measuring device. 4. The positioning equipment (17) comprises at least two light emitters (18, 19). , and only when the housing (2) is in place can the light emitters forming light spots on the body surface that fall within predetermined positions of each other. The measuring device according to any one of claims 1 to 3. 5. The light emitter (18, 19) is aimed or probed by the thermal sensor (14). installed on both sides of the polyurethane, and inclined to the axis of the polyurethane. 5. The measuring device according to claim 4, wherein the measuring device emits a luminous flux. 6. The light emitters (18, 19) are adjustable and the probing or aiming The emitter axis can be rotated to change the angle of the emitter axis relative to the polymer axis. 6. The measuring device according to claim 5, wherein the measuring device is connected to. 7. at least one of said spots is on the surface of said body part probed by said thermal sensor; 7. Measuring device according to claim 4, characterized in that it coincides with a surface. 8. Equipped with a cylinder (16) for the exploration or aiming polymer. The measuring device according to any one of claims 1 to 7, characterized in that: 9. The housing (2) has an opening (4) behind which a reflective device (15) is provided. ) is installed, the heat sensor (14) is placed in front of this reflective equipment, and the reflective equipment according to claim 8, characterized in that the probe or aiming polygon is cylindrical in shape. measuring device. 10. The housing (2) is provided with a hand grip (11) extending laterally thereof. Further, the push button (36) is installed at the base of the grip. Measuring device according to any one of items 1 to 9.